Process for nonpermanently dyeing human hair with indamine indoaniline and indophenol hair dyes

Claim 1

A process for nonpermanently dyeing human hair by applying a hair dye composition to the hair in an amount effective to color the hair, said process comprising 1. preparing said hair dye composition immediately before application of the same to the hair by incorporating into an aqueous carrier a dye in powder form, said dye being selected from the group consisting of a. a compound having the formula Y -- Ar.sub.1 - N = Ar.sub.2 = X wherein Ar 1 and Ar 2 each independently are selected from the group consisting of phenyl and pyridyl, each optionally substituted with a member selected from the group consisting of amino, hydroxy, lower alkoxy, lower alkyl, acetylamino and halogen, Y represents a member selected from the group consisting of hydroxy and ##EQU1## wherein R 1 and R 2 each independently represents a member selected from the group consisting of hydrogen, lower alkyl and amino lower alkyl wherein the amino moiety is optionally substituted by a member selected from the group consisting of acetyl, carbamyl and mesyl and X represents a member selected from the group consisting of oxygen, imine and iminium group, and b. a salt of the compound defined in (a), said composition containing 0.0005-2 percent by weight of said dye, and 2.